Intracardiac device

Abstract

The present invention provides intracardiac devices and methods of implanting the same. The intracardiac devices have a collapsible stent design and include an axial pump to support cardiac function. The axial pump can feature a shaftless fluid actuator for enhanced efficiency in fluid transfer while reducing blood cell trauma. The intracardiac devices include valves that are closeable to seal implanted devices from a subject's anatomy. The intracardiac devices include a cleaning system configured to introduce and circulate cleaning solutions and therapeutics to implanted devices. The intracardiac devices are wirelessly powered and controlled. The intracardiac devices can be implanted using minimally invasive procedures without the need for open heart surgery.

What is claimed is: 
     
       1. A system for assisting cardiac circulation comprising:
 an intracardiac device comprising:
 an elongate tubular collapsible body with first and second ends and an internal lumen therebetween; 
 a pump positioned within the internal lumen, the pump comprising a rotatable housing having first and second open ends and an internal passage therebetween, and one or more blades coupled to an inner surface of the housing extending into the internal passage; 
 an actuator coupled to the housing and configured to rotate the housing; and 
 
 a cleaning device comprising:
 an implantable pump having an inlet and an outlet fluidly connectable to the internal lumen of the tubular body. 
 
 
     
     
       2. The device of  claim 1 , further comprising a wireless power system having a transmitting coil electrically connected to a battery, and an implantable receiving coil electrically connected to the pump. 
     
     
       3. The device of  claim 1 , wherein the body has a collapsible stent construction having a membrane covering. 
     
     
       4. The device of  claim 3 , wherein the membrane covering is pericardium, a polymer or combinations thereof. 
     
     
       5. The device of  claim 1 , wherein the actuator comprises a motor coupled to the rotatable housing. 
     
     
       6. The device of  claim 5 , wherein the motor is coupled to one of the first and second open ends of the housing. 
     
     
       7. The device of  claim 6 , wherein the motor is coupled to an internal or external surface of the housing. 
     
     
       8. The device of  claim 1 , wherein the actuator comprises one or more magnets coupled to the housing. 
     
     
       9. The device of  claim 1 , wherein the rotor comprises a plurality of helical blades extending from the inner surface of the housing. 
     
     
       10. The device of  claim 9 , wherein each of the helical blades has a length less than half an inner diameter of the housing. 
     
     
       11. The device of  claim 10 , wherein each of the helical blades has an adjustable pitch. 
     
     
       12. The device of  claim 1 , wherein the pump further comprises a diffusor. 
     
     
       13. The device of  claim 1 , wherein the tubular body is movable between a collapsed configuration for advancement through a vessel in a patient, and an expanded configuration. 
     
     
       14. The device of  claim 1 , further comprising first and second valves positioned at, or near, the first and second ends of the tubular body, respectively, wherein the first and second valves are movable between an open position, wherein the first and second ends allow fluid passage therethrough, to a closed position, wherein the first and second ends are substantially sealed. 
     
     
       15. The device of  claim 1 , further comprising a transmitting coil and an implantable receiving coil coupled to the pump, the transmitting coil being configured to wirelessly transmit energy to the receiving coil. 
     
     
       16. The device of  claim 1 , further comprising a wireless receiver and a controller coupled to the wireless receiver and configured to modulate a speed of the pump. 
     
     
       17. The device of  claim 1 , wherein the tubular body is configured for implanting within a right atrium of a patient's heart to form a fluid pathway between a left atrium and an aorta of the patient. 
     
     
       18. The device of  claim 17 , wherein the first end includes an anchor configured for securing the first end to a fossa ovalis of the patient and the second end includes an anchor configured for securing to a sinotubular junction of the patient. 
     
     
       19. The system of  claim 1 , further comprising a cleaning port coupled to the implantable pump by a cleaning line. 
     
     
       20. The system of  claim 1 , wherein the implantable pump is a centrifugal pump. 
     
     
       21. The system of  claim 20 , wherein the centrifugal pump comprising an impeller and an actuator for rotating the impeller. 
     
     
       22. The system of  claim 21 , wherein the actuator comprises one or more magnets.